His expertise includes asset-backed financings and securitizations of credit card receivables, auto loans and leases, trade finance assets, aviation assets, renewables assets, and collateral loan obligations. Derek also regularly advises clients on regulatory matters in connection with structured finance transactions, including on U.S. credit risk retention and Volcker Rule issues. Derek has been recognized in legal directories, including Legal 500, and Chambers USA 2021, 2022 and 2023.

Derek is described as “an excellent lawyer who has deep expertise in many asset classes and has impressive technical expertise". Clients have also noted that "he is thoughtful, commercial and eloquent. He quickly distinguished himself by his dedication and intensity, delving into the most complex transactions and providing well-reasoned and practical advice." (Chambers USA 2023)